WO2021057232A1 - 信号传输方法及装置 - Google Patents

信号传输方法及装置 Download PDF

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Publication number
WO2021057232A1
WO2021057232A1 PCT/CN2020/104658 CN2020104658W WO2021057232A1 WO 2021057232 A1 WO2021057232 A1 WO 2021057232A1 CN 2020104658 W CN2020104658 W CN 2020104658W WO 2021057232 A1 WO2021057232 A1 WO 2021057232A1
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Prior art keywords
sprs
resource
terminal
frequency domain
protocol
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PCT/CN2020/104658
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English (en)
French (fr)
Inventor
任斌
李辉
缪德山
任晓涛
达人
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大唐移动通信设备有限公司
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Priority to EP20867626.2A priority Critical patent/EP4037226A4/en
Priority to US17/640,212 priority patent/US20220321294A1/en
Publication of WO2021057232A1 publication Critical patent/WO2021057232A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/003—Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • This application relates to the field of communication technology, and in particular to signal transmission methods and devices.
  • Proximity Communication Port 5 (Proximity Communication Port 5, PC5) defines the direct link (Sidelink) physical channel and signal format as follows:
  • PSSCH Physical Sidelink Shared Channel
  • D2D Device-to-Device
  • PSCH Physical Sidelink Control Channel
  • SA signaling used to carry control information channels, SA signaling; physical layer processing mechanisms such as coding, rate matching, and interleaving are the same as D2D;
  • PSBCH Physical Sidelink Broadcast Channel
  • PSSS/SSSS signal used to synchronize Sidelink.
  • PSCCH and PSSCH use 4 columns of demodulation reference signal (Demodulation Reference Signal, DMRS) pilots, and the Orthogonal Frequency Division Multiplexing (OFDM) symbols occupied by the DMRS are ⁇ 2, 5, 8, 11 ⁇ .
  • DMRS Demodulation Reference Signal
  • OFDM Orthogonal Frequency Division Multiplexing
  • TTI transmission time interval
  • AGC Automatic Gain Control
  • the last symbol of the subframe is used as a guard period (Guard Period, GP), and the GP uses a punching (Puncture) method for RE mapping.
  • the Sidelink physical channel and signal format defined by 5G New Radio (NR) PC5 are as follows:
  • Time slot structure AGC before, GP after, and TP in the middle of power change.
  • SCS SubCarrier Spacing
  • Synchronization synchronization subframe + synchronization block (SS/PBCH block, SSB);
  • the physical channel adds a physical sidelink feedback channel (PSFCH);
  • PSFCH physical sidelink feedback channel
  • the physical signal adds CSI-RS and PT-RS.
  • the embodiments of the present application provide a signal transmission method and device to realize the transmission of a direct link positioning reference signal, thereby realizing sidelink-based positioning.
  • a signal sending method provided in an embodiment of the present application includes:
  • the SPRS is sent to the second terminal through the through link for the second terminal to perform positioning measurement based on the SPRS.
  • the direct link positioning reference signal SPRS resource configuration information of the first terminal on the direct link is determined; according to the SPRS resource configuration information, the SPRS is sent to the second terminal through the direct link for the second terminal
  • the terminal performs positioning measurement based on the SPRS, thereby realizing the transmission of the direct link positioning reference signal, and then the positioning based on the Sidelink can be realized.
  • the SPRS resource configuration information includes one or a combination of the following information:
  • SPRS resource set SPRS resource, SPRS time domain structure, SPRS frequency domain structure, and time slot sequence number used to send SPRS to the second terminal.
  • the SPRS resource set has at least one of the following characteristics:
  • the SPRS resource set includes at least one SPRS resource, and all SPRS resources in the SPRS resource set are associated with the antenna array of the same terminal;
  • the identifier of each SPRS resource in the SPRS resource set is associated with one antenna array of a terminal.
  • the SPRS resource has at least one of the following characteristics:
  • the comb factor Comb-N resource unit pattern of each SPRS resource is used to map the SPRS sequence to the resource unit RE in the frequency domain;
  • the SPRS resource is described by at least one of the following parameters: SPRS resource ID, sequence ID, Comb-N value, resource unit RE offset, initial time slot and symbol of SPRS resource, number of symbols of each SPRS resource, and synchronization
  • the quasi co-site information of the block SSB ;
  • the number of symbols of the SPRS resource is predefined by the protocol or configured on the network side;
  • the value of the SPRS resource Comb-N is predefined by the protocol or configured on the network side.
  • the SPRS time domain structure supports the following two SPRS time domain structures:
  • Time slot bundling structure AGC, SPRS and GP are placed in sequence from front to back in multiple consecutive time slots.
  • the time slot bundling structure is used for one terminal to continuously send SPRS in the broadcast mode.
  • the number and positions of OFDM symbols occupied by the SPRS in the time domain are predefined by the protocol or configured on the network side.
  • the SPRS frequency domain structure supports the following two SPRS frequency domain structures:
  • the first frequency domain structure multiple consecutive resource units RE occupies the full bandwidth, and a comb-like manner of equal interval REs is used to distinguish different SPRS resources;
  • the second frequency domain structure the full bandwidth is divided into multiple different continuous sub-bands, and different SPRS resources occupy different sub-bands.
  • the comb factor in the frequency domain is predefined by the protocol or configured on the network side, and different SPRS resources are mapped to different transmit antenna arrays.
  • the SPRS frequency domain structure supports a fixed RE pattern and a frequency hopping RE pattern.
  • the SPRS frequency domain bandwidth in the SPRS frequency domain structure is predefined by the protocol or configured on the network side, and the maximum value is the maximum system bandwidth of the through link.
  • the SPRS resource configuration information is determined through protocol predefinition or signaling; wherein, the signaling includes one or a combination of the following signaling:
  • Broadcast signaling issued by the serving base station downlink control information DCI signaling, NR wireless air interface Uu protocol defined positioning dedicated signaling, short-range communication port PC5 protocol dedicated positioning signaling.
  • a signal receiving method provided in an embodiment of the present application includes:
  • the SPRS sent by the second terminal is received through the through link.
  • the method further includes:
  • the SPRS resource configuration information includes one or a combination of the following information:
  • SPRS resource set SPRS resource, SPRS time domain structure, SPRS frequency domain structure, and time slot sequence number for receiving SPRS sent by the second terminal.
  • the SPRS resource set has at least one of the following characteristics:
  • the SPRS resource set includes at least one SPRS resource, and all SPRS resources in the SPRS resource set are associated with the antenna array of the same terminal;
  • the identifier of each SPRS resource in the SPRS resource set is associated with one antenna array of a terminal.
  • the SPRS resource has at least one of the following characteristics:
  • the comb factor Comb-N resource unit pattern of each SPRS resource is used to map the SPRS sequence to the resource unit RE in the frequency domain;
  • the SPRS resource is described by at least one of the following parameters: SPRS resource ID, sequence ID, Comb-N value, resource unit RE offset, initial time slot and symbol of SPRS resource, number of symbols of each SPRS resource, and synchronization
  • the quasi co-site information of the block SSB ;
  • the number of symbols of the SPRS resource is predefined by the protocol or configured on the network side;
  • the value of the SPRS resource Comb-N is predefined by the protocol or configured on the network side.
  • the SPRS time domain structure supports the following two SPRS time domain structures:
  • Time slot binding structure Place automatic gain control AGC, SPRS and guard interval GP in sequence from front to back in multiple consecutive time slots.
  • the time slot bundling structure is used for one terminal to continuously send SPRS in the broadcast mode.
  • the number and positions of OFDM symbols occupied by the SPRS in the time domain are predefined by the protocol or configured on the network side.
  • the SPRS frequency domain structure supports the following two SPRS frequency domain structures:
  • the first frequency domain structure multiple consecutive resource units RE occupies the full bandwidth, and a comb-like manner of equal interval REs is used to distinguish different SPRS resources;
  • the second frequency domain structure the full bandwidth is divided into multiple different continuous sub-bands, and different SPRS resources occupy different sub-bands.
  • the comb factor in the frequency domain is predefined by the protocol or configured on the network side, and different SPRS resources are mapped to different transmit antenna arrays.
  • the SPRS frequency domain structure supports a fixed RE pattern and a frequency hopping RE pattern.
  • the SPRS frequency domain bandwidth in the SPRS frequency domain structure is predefined by the protocol or configured on the network side, and the maximum value is the maximum system bandwidth of the through link.
  • the SPRS resource configuration information is determined through protocol predefinition or signaling; wherein, the signaling includes one or a combination of the following signaling:
  • Broadcast signaling issued by the serving base station downlink control information DCI signaling, NR wireless air interface Uu protocol defined positioning dedicated signaling, short-range communication port PC5 protocol dedicated positioning signaling.
  • Memory used to store program instructions
  • the processor is configured to call the program instructions stored in the memory, and execute the following process according to the obtained program:
  • the SPRS is sent to the second terminal through the through link for the second terminal to perform positioning measurement based on the SPRS.
  • the SPRS resource configuration information includes one or a combination of the following information:
  • SPRS resource set SPRS resource, SPRS time domain structure, SPRS frequency domain structure, and time slot sequence number used to send SPRS to the second terminal.
  • the SPRS resource set has at least one of the following characteristics:
  • the SPRS resource set includes at least one SPRS resource, and all SPRS resources in the SPRS resource set are associated with the antenna array of the same terminal;
  • the identifier of each SPRS resource in the SPRS resource set is associated with one antenna array of a terminal.
  • the SPRS resource has at least one of the following characteristics:
  • the comb factor Comb-N resource unit pattern of each SPRS resource is used to map the SPRS sequence to the resource unit RE in the frequency domain;
  • the SPRS resource is described by at least one of the following parameters: SPRS resource ID, sequence ID, Comb-N value, resource unit RE offset, initial time slot and symbol of SPRS resource, number of symbols of each SPRS resource, and synchronization
  • the quasi co-site information of the block SSB ;
  • the number of symbols of the SPRS resource is predefined by the protocol or configured on the network side;
  • the value of the SPRS resource Comb-N is predefined by the protocol or configured on the network side.
  • the SPRS time domain structure supports the following two SPRS time domain structures:
  • Time slot bundling structure AGC, SPRS and GP are placed in sequence from front to back in multiple consecutive time slots.
  • the time slot bundling structure is used for one terminal to continuously send SPRS in the broadcast mode.
  • the number and positions of OFDM symbols occupied by the SPRS in the time domain are predefined by the protocol or configured on the network side.
  • the SPRS frequency domain structure supports the following two SPRS frequency domain structures:
  • the first frequency domain structure multiple consecutive resource units RE occupies the full bandwidth, and a comb-like manner of equal interval REs is used to distinguish different SPRS resources;
  • the second frequency domain structure the full bandwidth is divided into multiple different continuous sub-bands, and different SPRS resources occupy different sub-bands.
  • the comb factor in the frequency domain is predefined by the protocol or configured on the network side, and different SPRS resources are mapped to different transmit antenna arrays.
  • the SPRS frequency domain structure supports a fixed RE pattern and a frequency hopping RE pattern.
  • the SPRS frequency domain bandwidth in the SPRS frequency domain structure is predefined by the protocol or configured on the network side, and the maximum value is the maximum system bandwidth of the through link.
  • the SPRS resource configuration information is determined through protocol predefinition or signaling; wherein, the signaling includes one or a combination of the following signaling:
  • Broadcast signaling issued by the serving base station downlink control information DCI signaling, NR wireless air interface Uu protocol defined positioning dedicated signaling, short-range communication port PC5 protocol dedicated positioning signaling.
  • Memory used to store program instructions
  • the processor is configured to call the program instructions stored in the memory, and execute the following process according to the obtained program:
  • the SPRS sent by the second terminal is received through the through link.
  • the processor is further configured to:
  • the SPRS resource configuration information includes one or a combination of the following information:
  • SPRS resource set SPRS resource, SPRS time domain structure, SPRS frequency domain structure, and time slot sequence number for receiving SPRS sent by the second terminal.
  • the SPRS resource set has at least one of the following characteristics:
  • the SPRS resource set includes at least one SPRS resource, and all SPRS resources in the SPRS resource set are associated with the antenna array of the same terminal;
  • the identifier of each SPRS resource in the SPRS resource set is associated with one antenna array of a terminal.
  • the SPRS resource has at least one of the following characteristics:
  • the comb factor Comb-N resource unit pattern of each SPRS resource is used to map the SPRS sequence to the resource unit RE in the frequency domain;
  • the SPRS resource is described by at least one of the following parameters: SPRS resource ID, sequence ID, Comb-N value, resource unit RE offset, initial time slot and symbol of SPRS resource, number of symbols of each SPRS resource, and synchronization
  • the quasi co-site information of the block SSB ;
  • the number of symbols of the SPRS resource is predefined by the protocol or configured on the network side;
  • the value of the SPRS resource Comb-N is predefined by the protocol or configured on the network side.
  • the SPRS time domain structure supports the following two SPRS time domain structures:
  • Time slot binding structure Place automatic gain control AGC, SPRS and guard interval GP in sequence from front to back in multiple consecutive time slots.
  • the time slot bundling structure is used for one terminal to continuously send SPRS in the broadcast mode.
  • the number and positions of OFDM symbols occupied by the SPRS in the time domain are predefined by the protocol or configured on the network side.
  • the SPRS frequency domain structure supports the following two SPRS frequency domain structures:
  • the first frequency domain structure multiple consecutive resource units RE occupies the full bandwidth, and a comb-like manner of equal interval REs is used to distinguish different SPRS resources;
  • the second frequency domain structure the full bandwidth is divided into multiple different continuous sub-bands, and different SPRS resources occupy different sub-bands.
  • the comb factor in the frequency domain is predefined by the protocol or configured on the network side, and different SPRS resources are mapped to different transmit antenna arrays.
  • the SPRS frequency domain structure supports a fixed RE pattern and a frequency hopping RE pattern.
  • the SPRS frequency domain bandwidth in the SPRS frequency domain structure is predefined by the protocol or configured on the network side, and the maximum value is the maximum system bandwidth of the through link.
  • the SPRS resource configuration information is determined through protocol predefinition or signaling; wherein, the signaling includes one or a combination of the following signaling:
  • Broadcast signaling issued by the serving base station downlink control information DCI signaling, NR wireless air interface Uu protocol defined positioning dedicated signaling, short-range communication port PC5 protocol dedicated positioning signaling.
  • a determining unit configured to determine the direct link positioning reference signal SPRS resource configuration information of the first terminal on the direct link
  • the sending unit is configured to send the SPRS to the second terminal through the through link according to the SPRS resource configuration information, for the second terminal to perform positioning measurement based on the SPRS.
  • a determining unit configured to determine the direct link positioning reference signal SPRS resource configuration information of the first terminal on the direct link, where the SPRS resource configuration information is sent by the second terminal;
  • the receiving unit is configured to receive the SPRS sent by the second terminal through the through link according to the SPRS resource configuration information.
  • Another embodiment of the present application provides a computer storage medium, the computer storage medium stores computer-executable instructions, and the computer-executable instructions are used to make the computer execute any of the foregoing methods.
  • Figure 1 is a schematic diagram of the frame structure of the PSCCH channel and PSSCH channel of LTE PC5 V2V;
  • FIG. 2 is a schematic flowchart of a signal sending method provided by an embodiment of this application.
  • FIG. 3 is a schematic flowchart of a signal receiving method provided by an embodiment of this application.
  • FIG. 4A is a schematic diagram of the first type of SPRS time domain structure provided by an embodiment of this application.
  • FIG. 4B is a schematic diagram of a second type of SPRS time domain structure provided by an embodiment of this application.
  • FIG. 5 is a schematic diagram of an SPRS signal pattern (Pattern) provided by an embodiment of the application.
  • FIG. 6 is a schematic diagram of another SPRS signal pattern (Pattern) provided by an embodiment of the application.
  • FIG. 7 is a schematic diagram of UE relative positioning from bike to bike based on RSS according to an embodiment of the application.
  • FIG. 8 is a schematic structural diagram of a signal transmission device provided by an embodiment of the application.
  • FIG. 9 is a schematic structural diagram of a signal sending device provided by an embodiment of the application.
  • FIG. 10 is a schematic structural diagram of a signal receiving device provided by an embodiment of the application.
  • the embodiments of the present application provide a signal transmission method and device to realize the transmission of a direct link positioning reference signal, thereby realizing sidelink-based positioning.
  • the method and the device are based on the same application concept. Since the method and the device have similar principles for solving the problem, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.
  • the technical solutions provided by the embodiments of the present application may be applicable to various systems, especially 5G systems.
  • the applicable system can be the Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA) system, and Wideband Code Division Multiple Access (WCDMA) general packet Wireless business (general packet radio service, GPRS) system, long-term evolution LTE system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system system, UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G system, 5G NR system, etc.
  • GSM Global System for Mobile Communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General packet Radio service
  • long-term evolution LTE system long-term evolution LTE system
  • LTE frequency division duplex (FDD) system LTE time division duplex
  • TDD LTE time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave
  • the terminal device involved in the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem.
  • the name of the terminal device may be different.
  • the terminal device may be called a user equipment (UE).
  • the wireless terminal device can communicate with one or more core networks via the RAN.
  • the wireless terminal device can be a mobile terminal device, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal device, for example, it can be a portable , Pocket, handheld, computer built-in or vehicle-mounted mobile devices that exchange language and/or data with the wireless access network.
  • Wireless terminal equipment can also be called system, subscriber unit, subscriber station, mobile station, mobile station, remote station, and access point , Remote terminal equipment (remote terminal), access terminal equipment (access terminal), user terminal equipment (user terminal), user agent (user agent), user device (user device), which are not limited in the embodiments of the present application.
  • the network device involved in the embodiment of the present application may be a base station, and the base station may include multiple cells.
  • a base station may also be called an access point, or may refer to a device in an access network that communicates with a wireless terminal device through one or more sectors on an air interface, or other names.
  • the network device can be used to convert the received air frame and the Internet protocol (IP) packet to each other, as a router between the wireless terminal device and the rest of the access network, where the rest of the access network can include the Internet Protocol (IP) communication network.
  • IP Internet Protocol
  • the network equipment can also coordinate the attribute management of the air interface.
  • the network equipment involved in the embodiments of the present application may be a network equipment (basetransceiver station, BTS) in the global system for mobile communication GSM or code division multiple access CDMA, or it may be a wide-band code division multiple access (BTS).
  • BTS basetransceiver station
  • the network equipment (NodeB) in band code division multiple access, WCDMA can also be the evolved network equipment (evolutional node B, eNB or e-NodeB) in the long-term evolution LTE system, and the 5G network architecture (next generation system)
  • the 5G base station may also be a home evolved node B (HeNB), a relay node, a femto, a pico, etc., which are not limited in the embodiment of the present application.
  • HeNB home evolved node B
  • relay node a relay node
  • pico pico
  • the embodiment of the present application proposes a method for transmitting and receiving a PRS (SPRS for short) signal based on Sidelink, which is used for UE position positioning based on Sidelink.
  • SPRS PRS for short
  • a signal transmission method provided by an embodiment of the present application , Including the following steps:
  • the first terminal is the V-UE1, and obtains the SPRS2 resource configuration information of the V-UE1 on the Sidelink link through protocol predefinition or signaling, and is used to send the SPRS2 signal.
  • the SPRS sent to the second terminal V-UE2 is called SPRS2
  • the SPRS sent by V-UE2 to V-UE1 that is, the SPRS received by V-UE1
  • SPRS1 the SPRS sent by V-UE2 to V-UE1
  • the SPRS2 resource configuration information includes one or a combination of the following information: SPRS2 resource set, SPRS2 resource, SPRS2 time domain structure and SPRS2 frequency domain structure, and the slot sequence number n used to send SPRS2 to other V-UE2.
  • the signaling may be broadcast signaling, Downlink Control Information (DCI) signaling, positioning dedicated signaling, or positioning dedicated signaling of the short-range communication port PC5 protocol issued by the serving base station of the Uu port.
  • DCI Downlink Control Information
  • V-UE1 sends an SPRS2 signal to V-UE2 for V-UE2 to perform positioning measurement based on the SPRS2 signal, and to calculate the relative relationship between V-UE1 and V-UE2. Distance information.
  • a signal receiving method provided in an embodiment of the present application includes:
  • S201 Determine the direct link positioning reference signal SPRS resource configuration information of the first terminal on the direct link, where the SPRS resource configuration information is sent by the second terminal.
  • the SPRS1 resource configuration information of the V-UE1 on the Sidelink link from the V-UE2 is obtained through protocol predefinition or signaling, and used to receive the SPRS1 signal.
  • S202 According to the SPRS resource configuration information, receive the SPRS sent by the second terminal through the through link.
  • V-UE1 receives the SPRS1 signal sent by V-UE2.
  • the configuration information includes one or a combination of the following information: SPRS1 resource set, SPRS1 resource, SPRS1 time domain structure and SPRS1 frequency domain structure, and a slot sequence number m for receiving SPRS1 from V-UE2.
  • the signaling may be broadcast signaling, DCI signaling, dedicated positioning signaling, or dedicated positioning signaling of the PC5 protocol issued by the serving base station of the Uu port.
  • the method further includes:
  • V-UE1 measures the SPRS1 signal to obtain positioning measurement values, including but not limited to signal strength (Received Signal Strength, RSS), Time Of Arrival (Time Of Arrival, TOA), and Angle of Arrival (Angle Of Arrival, AOA) etc.
  • signal strength Receiveived Signal Strength, RSS
  • Time Of Arrival Time Of Arrival
  • TOA Time Of Arrival
  • AOA Angle of Arrival
  • V-UE1 calculates the relative distance information from V-UE2 to V-UE1 according to the above-mentioned positioning measurement value.
  • the SPRS signals between different V-UEs can be frequency division multiplexing (Frequency Division Multiplexing, FDM), code division multiplexing (CDM) or time division multiplexing.
  • FDM Frequency Division Multiplexing
  • CDM code division multiplexing
  • TDM Time Division Multiplexing
  • protocol pre-defined signaling configuration
  • signaling configuration broadcast signaling, physical layer DCI signaling and dedicated positioning signaling, Uu port configuration or PC5 configuration
  • V-UE1 Except for V-UE1, all other UEs (for example: V-UE2) are applicable to any of the above-mentioned methods provided in the embodiments of the present application.
  • the SPRS signal design based on Sidelink is given below.
  • the SPRS signal based on Sidelink provided in the embodiment of the application adopts a two-level structure of SPRS resource set and SPRS resource.
  • the default configuration SPRS resource set contains only one SPRS resource (SPRS resource), because the V-UE antenna array (Panel) contains The number of antennas is small, especially in FR1, which generally does not do beam sweeping; for NR band 2 (Frequency Range 2, FR2), SPRS may do beam scanning instead of beam forming.
  • An SPRS resource set is a set containing SPRS resources, each of which has an SPRS resource ID, and all SPRS resources of an SPRS resource set are associated with the antenna array (ie Panel) of the same V-UE;
  • one SPRS resource ID in one SPRS resource set is associated with a single antenna array sent from a single V-UE, and the V-UE can send one or more antenna arrays.
  • Uu port's PRS is associated with TRP
  • Sidelink's SPRS is associated with the V-UE antenna array.
  • the comb factor N (Comb-N, Comb-N) resource unit pattern of each SPRS resource is used to map the SPRS sequence to the resource unit in the frequency domain.
  • the Comb-N pattern can span SPRS symbols in the frequency domain.
  • SPRS resources are described by at least the following parameters: SPRS resource ID, sequence ID, Comb-N value, RE offset, initial time slot and symbol of SPRS resource, number of symbols per SPRS resource (duration of SPRS resource), and Quasi-CoLocation (QCL) information with the sync block SSB;
  • the number of SPRS resource symbols is pre-defined by the protocol or configured on the network side, for example: it can be flexibly configured from the set ⁇ 2,4,6 ⁇ ;
  • the SPRS resource Comb-N value protocol is pre-defined or configured on the network side, for example, it can be flexibly configured from the set ⁇ 2, 4, 6 ⁇ .
  • Type 1 Single Slot structure: Place automatic gain control AGC (including 1 or more OFDM symbols) in the front section of a slot, place guard interval GP (including 1 or more OFDM symbols) at the back end, and SPRS in the middle The number and location of the are pre-defined by the protocol or configured on the flexible network side;
  • Type 2 (Slot Bundling structure): AGC (1 or more OFDM symbols) is placed at the forefront of N consecutive slots, GP (1 or more OFDM symbols) is placed at the end, and the number and position of SPRS in the middle It is pre-defined by the protocol or configured on the flexible network side.
  • Type2 is used for one V-UE to continuously send SPRS in broadcast mode, and multiple V-UEs are not allowed to use two consecutive slots.
  • Fig. 4A and Fig. 4B show the time domain structure of the above two kinds of SPRS.
  • N 2
  • the SPRS resource includes 2 OFDM symbols.
  • the number of OFDM symbols occupied by the SPRS in the time domain is configurable, and usually multiple OFDM symbols are configured to support the V-UE to perform TOA, AoA, and Doppler measurements.
  • the SPRS frequency domain bandwidth is predefined by the protocol or configured on the network side, and the maximum value is the maximum system bandwidth of Sidelink.
  • the first frequency domain structure (Pattern Type A): continuous RE occupies the full bandwidth, and the comb factor N (Comb Factor-N, Comb-N) method is used to distinguish different SPRS resources;
  • the second frequency domain structure (Pattern Type B): The full bandwidth is divided into N different continuous sub-bands, and different SPRS resources occupy different sub-bands.
  • the Comb-N factor in the frequency domain is predefined by the protocol or configured on the network side, including ⁇ 1,2,4 ⁇ , where the number of V-UE transmitting antennas N_Tx is typically 2 or 4.
  • Different SPRS resources may be mapped to different transmit antenna arrays. For example: when the V-UE has 4 transmit antenna arrays, each antenna array maps a different SPRS resource.
  • Pattern Type A and Type B both support fixed RE patterns and frequency hopping RE patterns.
  • Figure 5 shows a schematic diagram of the Pattern Type A of the SPRS signal.
  • the comb factor N (Comb-N) is equivalent to a frequency domain decimation factor, so that the subcarriers used by the same SPRS resource have a comb spectrum.
  • SPRS resource 1 uses subcarriers 0, 4, and 8 with an interval of 4;
  • SPRS resource 2 uses subcarriers 1, 5, and 9 with an interval of 4;
  • SPRS resource 3 uses subcarriers 2, 6, and 10 with an interval of 4;
  • SPRS resources 4 Use subcarriers 3, 7, and 11 with an interval of 4.
  • Embodiment 1 Relative positioning based on the RSS measurement value of SPRS.
  • the V-UE relative positioning scenario from bike to bike based on RSS is shown in FIG. 7.
  • the multiplexing mode of SPRS signals (for example, the aforementioned SPRS1 and SPRS2) between different V-UEs is TDM, which can be configured in a manner predefined by the protocol.
  • the method for V-UE1 to send SPRS includes:
  • Step1 Obtain the SPRS2 resource configuration information sent by the V-UE1 on the Sidelink link through protocol predefinition.
  • the configuration information includes SPRS2 resource set, SPRS2 resource, SPRS2 time domain structure and SPRS2 frequency domain structure, and the slot sequence number n used to send SPRS2 to other V-UE2.
  • the SPRS2 resource set contains 1 SPRS2 resource
  • the SPRS2 resource contains 2 OFDM symbols
  • the Comb factor is 2
  • the SPRS2 time domain structure uses the Type A shown in Figure 4A
  • the SPRS2 frequency domain structure uses the Pattern Type A shown in Figure 5 .
  • V-UE1 sends SPRS2 signal to V-UE2 for V-UE2 to perform positioning measurement based on the signal, and calculate the relative distance information from V-UE1 to V-UE2.
  • the methods for V-UE1 to receive SPRS include:
  • Step1 Obtain the SPRS1 resource configuration information received from V-UE2 on the Sidelink link by the V-UE1 through protocol predefinition, where the configuration information includes SPRS1 resource set, SPRS1 resource, SPRS1 time domain structure and SPRS1 frequency domain structure, and Used to receive the slot number m of SPRS1 from V-UE2.
  • Step2 V-UE1 receives the SPRS1 signal sent by V-UE2.
  • Step3 V-UE1 measures the SPRS1 signal to obtain the positioning measurement value RSS.
  • Step4 V-UE1 calculates the relative distance information from V-UE2 to V-UE1 according to the above-mentioned positioning measurement value RSS and the pre-configured or real-time estimated path loss model.
  • the SPRS sending and receiving method of V-UE2 adopts the same operation as that of V-UE1.
  • the difference is that V-UE2 receives the SPRS2 signal sent by V-UE1 in Slot#n; V-UE2 sends the SPRS1 signal to V-UE1 in slot#m.
  • Embodiment 2 The relative positioning of TOA measurement values based on SPRS.
  • the TOA-based relative positioning scene from bicycle to bicycle is shown in FIG. 7.
  • the SPRS signals between different V-UEs (for example: the above-mentioned SPRS1 and SPRS2) are multiplexed by TDM, and the broadcast signaling, DCI signaling, and positioning dedicated signaling issued by the serving base station of the Uu port can be used Configuration.
  • V-UE1 sends SPRS methods including:
  • Step 1 Obtain the SPRS2 resource configuration information sent by the V-UE1 on the Sidelink link through signaling.
  • the configuration information includes SPRS2 resource set, SPRS2 resource, SPRS2 time domain structure and SPRS2 frequency domain structure, and the slot sequence number n used to send SPRS2 to other V-UE2.
  • the SPRS2 resource set contains 1 SPRS2 resource
  • the SPRS2 resource contains 2 OFDM symbols
  • the Comb factor is 2
  • the SPRS2 time domain structure uses Type B shown in Figure 4B
  • the SPRS2 frequency domain structure uses Pattern Type A shown in Figure 5 .
  • the signaling may be broadcast signaling, DCI signaling, or positioning dedicated signaling issued by the serving base station of the Uu wireless link.
  • V-UE1 sends SPRS2 signal to V-UE2 for V-UE2 to perform TOA positioning measurement based on the signal, and calculate the relative distance information from V-UE1 to V-UE2.
  • the methods for V-UE1 to receive SPRS include:
  • Step 1 Obtain the SPRS1 resource configuration information received from V-UE2 on the Sidelink link by the V-UE1 through signaling.
  • the configuration information includes SPRS1 resource set, SPRS1 resource, SPRS1 time domain structure and SPRS1 frequency domain structure, and the slot sequence number m used to receive SPRS1 from V-UE2.
  • the signaling may be broadcast signaling, DCI signaling, or positioning dedicated signaling issued by the serving base station from the Uu port.
  • Step2 V-UE1 receives the SPRS1 signal sent by V-UE2.
  • Step3 V-UE1 measures the SPRS1 signal to obtain the positioning measurement value TOA.
  • Step4 V-UE1 calculates the relative distance information from V-UE2 to V-UE1 according to the above-mentioned positioning measurement value TOA.
  • V-UE2 receives the SPRS2 signal sent by V-UE1 in Slot#n; V-UE2 sends the SPRS1 signal to V-UE1 in slot#m.
  • Embodiment 3 The relative positioning of TOA+AoA measurement values based on SPRS.
  • the relative positioning scene from bicycle to bicycle based on TOA+AoA is shown in FIG. 7.
  • the SPRS signals between different V-UEs (for example, the aforementioned SPRS1 and SPRS2) are multiplexed by TDM, and configured by means of positioning dedicated signaling of the PC5 protocol.
  • V-UE1 sends SPRS methods including:
  • Step 1 Obtain the SPRS2 resource configuration information sent by the V-UE1 on the Sidelink link through signaling.
  • the configuration information includes SPRS2 resource set, SPRS2 resource, SPRS2 time domain structure and SPRS2 frequency domain structure, and the slot sequence number n used to send SPRS2 to other V-UE2.
  • the SPRS2 resource set contains 1 SPRS2 resource
  • the SPRS2 resource contains 2 OFDM symbols
  • the Comb factor is 2
  • the SPRS2 time domain structure uses the Type B shown in Figure 4B
  • the SPRS2 frequency domain structure uses the Pattern Type B shown in Figure 6. .
  • the signaling may be dedicated positioning signaling from the PC5 protocol.
  • V-UE1 sends SPRS2 signal to V-UE2 for V-UE2 to perform TOA+AoA positioning measurement based on the signal, and calculate the relative distance information from V-UE1 to V-UE2.
  • the method for V-UE1 to receive SPRS includes:
  • Step 1 Obtain the SPRS1 resource configuration information received from V-UE2 on the Sidelink link by the V-UE1 through signaling.
  • the configuration information includes SPRS1 resource set, SPRS1 resource, SPRS1 time domain structure and SPRS1 frequency domain structure, and the slot sequence number m used to receive SPRS1 from V-UE2.
  • the signaling is dedicated signaling for positioning from the PC5 protocol.
  • Step2 V-UE1 receives the SPRS1 signal sent by V-UE2.
  • Step3 V-UE1 measures the SPRS1 signal to obtain the positioning measurement values TOA and AoA.
  • Step4 V-UE1 calculates the relative distance information from V-UE2 to V-UE1 according to the above-mentioned positioning measurement values TOA and AoA.
  • V-UE2 receives the SPRS2 signal sent by V-UE1 in Slot#n; V-UE2 sends the SPRS1 signal to V-UE1 in slot#m.
  • the embodiment of the present application proposes a Sidelink-based SPRS signal transmission and reception method, which is used for Sidelink UE position positioning.
  • CSI-RS Compared with the existing DMRS of Sidelink, which can only exist with data, CSI-RS depends on the configuration, and these two signals cannot be sent periodically as a general positioning reference signal; the SPRS signal proposed in the embodiment of this application can be sent periodically. The time has nothing to do with whether to send data, so that it can meet the positioning needs.
  • the frequency domain bandwidth of the SPRS signal proposed in the embodiment of this application is configurable, and the maximum value is the maximum of Sidelink The system bandwidth, therefore, can meet the timing measurement accuracy of positioning.
  • a signal transmission device provided by an embodiment of the present application includes:
  • the memory 620 is used to store program instructions
  • the processor 600 is configured to call program instructions stored in the memory, and execute any one of the methods provided in the embodiments of the present application according to the obtained program.
  • the processor 600 is specifically configured to:
  • the SPRS is sent to the second terminal through the through link for the second terminal to perform positioning measurement based on the SPRS.
  • the SPRS resource configuration information includes one or a combination of the following information:
  • SPRS resource set SPRS resource, SPRS time domain structure, SPRS frequency domain structure, and time slot sequence number used to send SPRS to the second terminal.
  • the processor 600 is specifically configured to:
  • the SPRS sent by the second terminal is received through the through link.
  • processor 600 is further configured to:
  • the SPRS resource configuration information includes one or a combination of the following information:
  • SPRS resource set SPRS resource, SPRS time domain structure, SPRS frequency domain structure, and time slot sequence number for receiving SPRS sent by the second terminal.
  • the SPRS resource set has at least one of the following characteristics:
  • the SPRS resource set includes at least one SPRS resource, and all SPRS resources in the SPRS resource set are associated with the antenna array of the same terminal;
  • the identifier of each SPRS resource in the SPRS resource set is associated with one antenna array of a terminal.
  • the SPRS resource has at least one of the following characteristics:
  • the comb factor Comb-N resource unit pattern of each SPRS resource is used to map the SPRS sequence to the resource unit RE in the frequency domain;
  • the SPRS resource is described by at least one of the following parameters: SPRS resource ID, sequence ID, Comb-N value, resource unit RE offset, initial time slot and symbol of SPRS resource, number of symbols of each SPRS resource, and synchronization
  • the quasi co-site information of the block SSB ;
  • the number of symbols of the SPRS resource is predefined by the protocol or configured on the network side;
  • the value of the SPRS resource Comb-N is predefined by the protocol or configured on the network side.
  • the SPRS time domain structure supports the following two SPRS time domain structures:
  • Time slot binding structure Place automatic gain control AGC, SPRS and guard interval GP in sequence from front to back in multiple consecutive time slots.
  • the time slot bundling structure is used for one terminal to continuously send SPRS in the broadcast mode.
  • the number and positions of OFDM symbols occupied by the SPRS in the time domain are predefined by the protocol or configured on the network side.
  • the SPRS frequency domain structure supports the following two SPRS frequency domain structures:
  • the first frequency domain structure multiple consecutive resource units RE occupies the full bandwidth, and a comb-like manner of equal interval REs is used to distinguish different SPRS resources;
  • the second frequency domain structure the full bandwidth is divided into multiple different continuous sub-bands, and different SPRS resources occupy different sub-bands.
  • the comb factor in the frequency domain is predefined by the protocol or configured on the network side, and different SPRS resources are mapped to different transmit antenna arrays.
  • the SPRS frequency domain structure supports a fixed RE pattern and a frequency hopping RE pattern.
  • the SPRS frequency domain bandwidth in the SPRS frequency domain structure is predefined by the protocol or configured on the network side, and the maximum value is the maximum system bandwidth of the through link.
  • the SPRS resource configuration information is determined through protocol predefinition or signaling; wherein, the signaling includes one or a combination of the following signaling:
  • Broadcast signaling issued by the serving base station downlink control information DCI signaling, NR wireless air interface Uu protocol defined positioning dedicated signaling, short-range communication port PC5 protocol dedicated positioning signaling.
  • the transceiver 610 is configured to receive and send data under the control of the processor 600.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 600 and various circuits of the memory represented by the memory 620 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein.
  • the bus interface provides the interface.
  • the transceiver 610 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.
  • the user interface 630 may also be an interface capable of connecting externally and internally with the required equipment.
  • the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 600 when performing operations.
  • the processor 600 may be a central processing unit (Center Processing Unit, CPU), an application specific integrated circuit (ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable Logic device (Complex Programmable Logic Device, CPLD).
  • CPU Center Processing Unit
  • ASIC application specific integrated circuit
  • FPGA Field-Programmable Gate Array
  • CPLD complex Programmable Logic Device
  • Any device provided in the embodiments of the present application may be any type of terminal, and the terminal may have both the function of sending and receiving SPRS signals.
  • a signal sending device provided by an embodiment of the present application includes:
  • the determining unit 11 is configured to determine the direct link positioning reference signal SPRS resource configuration information of the first terminal on the direct link;
  • the sending unit 12 is configured to send the SPRS to the second terminal through the through link according to the SPRS resource configuration information, for the second terminal to perform positioning measurement based on the SPRS.
  • the SPRS resource configuration information includes one or a combination of the following information:
  • SPRS resource set SPRS resource, SPRS time domain structure, SPRS frequency domain structure, and time slot sequence number used to send SPRS to the second terminal.
  • the SPRS resource set has at least one of the following characteristics:
  • the SPRS resource set includes at least one SPRS resource, and all SPRS resources in the SPRS resource set are associated with the antenna array of the same terminal;
  • the identifier of each SPRS resource in the SPRS resource set is associated with one antenna array of a terminal.
  • the SPRS resource has at least one of the following characteristics:
  • the comb factor Comb-N resource unit pattern of each SPRS resource is used to map the SPRS sequence to the resource unit RE in the frequency domain;
  • the SPRS resource is described by at least one of the following parameters: SPRS resource ID, sequence ID, Comb-N value, resource unit RE offset, initial time slot and symbol of SPRS resource, number of symbols of each SPRS resource, and synchronization
  • the quasi co-site information of the block SSB ;
  • the number of symbols of the SPRS resource is predefined by the protocol or configured on the network side;
  • the value of the SPRS resource Comb-N is predefined by the protocol or configured on the network side.
  • the SPRS time domain structure supports the following two SPRS time domain structures:
  • Time slot bundling structure AGC, SPRS and GP are placed in sequence from front to back in multiple consecutive time slots.
  • the time slot bundling structure is used for one terminal to continuously send SPRS in the broadcast mode.
  • the number and positions of OFDM symbols occupied by the SPRS in the time domain are predefined by the protocol or configured on the network side.
  • the SPRS frequency domain structure supports the following two SPRS frequency domain structures:
  • the first frequency domain structure multiple consecutive resource unit REs occupy the full bandwidth, and a comb-like manner of equally spaced REs is used to distinguish different SPRS resources;
  • the second frequency domain structure the full bandwidth is divided into multiple different continuous sub-bands, and different SPRS resources occupy different sub-bands.
  • the comb factor in the frequency domain is predefined by the protocol or configured on the network side, and different SPRS resources are mapped to different transmit antenna arrays.
  • the SPRS frequency domain structure supports a fixed RE pattern and a frequency hopping RE pattern.
  • the SPRS frequency domain bandwidth in the SPRS frequency domain structure is predefined by the protocol or configured on the network side, and the maximum value is the maximum system bandwidth of the through link.
  • the SPRS resource configuration information is determined through protocol predefinition or signaling; wherein, the signaling includes one or a combination of the following signaling:
  • Broadcast signaling issued by the serving base station downlink control information DCI signaling, NR wireless air interface Uu protocol defined positioning dedicated signaling, short-range communication port PC5 protocol dedicated positioning signaling.
  • a signal receiving device provided by an embodiment of the present application includes:
  • the determining unit 21 is configured to determine the direct link positioning reference signal SPRS resource configuration information of the first terminal on the direct link, where the SPRS resource configuration information is sent by the second terminal;
  • the receiving unit 22 is configured to receive the SPRS sent by the second terminal through the through link according to the SPRS resource configuration information.
  • the determining unit 21 is further configured to:
  • the SPRS resource configuration information includes one or a combination of the following information:
  • SPRS resource set SPRS resource, SPRS time domain structure, SPRS frequency domain structure, and time slot sequence number for receiving SPRS sent by the second terminal.
  • the SPRS resource set has at least one of the following characteristics:
  • the SPRS resource set includes at least one SPRS resource, and all SPRS resources in the SPRS resource set are associated with the antenna array of the same terminal;
  • the identifier of each SPRS resource in the SPRS resource set is associated with one antenna array of a terminal.
  • the SPRS resource has at least one of the following characteristics:
  • the comb factor Comb-N resource unit pattern of each SPRS resource is used to map the SPRS sequence to the resource unit RE in the frequency domain;
  • the SPRS resource is described by at least one of the following parameters: SPRS resource ID, sequence ID, Comb-N value, resource unit RE offset, initial time slot and symbol of SPRS resource, number of symbols of each SPRS resource, and synchronization
  • the quasi co-site information of the block SSB ;
  • the number of symbols of the SPRS resource is predefined by the protocol or configured on the network side;
  • the value of the SPRS resource Comb-N is predefined by the protocol or configured on the network side.
  • the SPRS time domain structure supports the following two SPRS time domain structures:
  • Time slot binding structure Place automatic gain control AGC, SPRS and guard interval GP in sequence from front to back in multiple consecutive time slots.
  • the time slot bundling structure is used for one terminal to continuously send SPRS in the broadcast mode.
  • the number and positions of OFDM symbols occupied by the SPRS in the time domain are predefined by the protocol or configured on the network side.
  • the SPRS frequency domain structure supports the following two SPRS frequency domain structures:
  • the first frequency domain structure multiple consecutive resource units RE occupies the full bandwidth, and a comb-like manner of equal interval REs is used to distinguish different SPRS resources;
  • the second frequency domain structure the full bandwidth is divided into multiple different continuous sub-bands, and different SPRS resources occupy different sub-bands.
  • the comb factor in the frequency domain is predefined by the protocol or configured on the network side, and different SPRS resources are mapped to different transmit antenna arrays.
  • the SPRS frequency domain structure supports a fixed RE pattern and a frequency hopping RE pattern.
  • the SPRS frequency domain bandwidth in the SPRS frequency domain structure is predefined by the protocol or configured on the network side, and the maximum value is the maximum system bandwidth of the through link.
  • the SPRS resource configuration information is determined through protocol predefinition or signaling; wherein, the signaling includes one or a combination of the following signaling:
  • Broadcast signaling issued by the serving base station downlink control information DCI signaling, NR wireless air interface Uu protocol defined positioning dedicated signaling, short-range communication port PC5 protocol dedicated positioning signaling.
  • the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including a number of instructions to enable a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .
  • the embodiment of the present application provides a computing device, and the computing device may specifically be a desktop computer, a portable computer, a smart phone, a tablet computer, a personal digital assistant PDA, and the like.
  • the computing device may include a central processing unit CPU, memory, input/output devices, etc., input devices may include keyboards, mice, touch screens, etc., output devices may include display devices, such as liquid crystal displays (LCD), cathode ray tubes (Cathode Ray Tube, CRT) etc.
  • LCD liquid crystal displays
  • CRT cathode ray tubes
  • the memory may include read only memory (ROM) and random access memory (RAM), and provides the processor with program instructions and data stored in the memory.
  • ROM read only memory
  • RAM random access memory
  • the memory may be used to store the program of any of the methods provided in the embodiments of the present application.
  • the processor calls the program instructions stored in the memory, and the processor is configured to execute any of the methods provided in the embodiments of the present application according to the obtained program instructions.
  • the embodiment of the present application provides a computer storage medium for storing computer program instructions used by the device provided in the foregoing embodiment of the present application, which includes a program for executing any method provided in the foregoing embodiment of the present application.
  • the computer storage medium may be any available medium or data storage device that the computer can access, including but not limited to magnetic storage (such as floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor memory (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)), etc.
  • magnetic storage such as floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
  • optical storage such as CD, DVD, BD, HVD, etc.
  • semiconductor memory such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)
  • this application can be provided as methods, systems, or computer program products. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program codes.
  • a computer-usable storage media including but not limited to disk storage, optical storage, etc.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

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Abstract

本申请公开了信号传输方法及装置，用以实现直通链路Sidelink定位参考信号的传输，从而实现基于Sidelink的定位。在发送端，本申请实施例提供的一种信号发送方法，包括：确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息；根据所述SPRS资源配置信息，通过直通链路向第二终端发送SPRS，用于所述第二终端基于该SPRS进行定位测量。

Description

信号传输方法及装置
相关申请的交叉引用
本申请要求在2019年09月29日提交中国专利局、申请号为201910937200.2、申请名称为“信号传输方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及信号传输方法及装置。
背景技术
4G长期演进(Long Term Evolution，LTE)近距离通信端口5(Proximity Communication Port 5，PC5)定义的直通链路(Sidelink)物理信道和信号格式介绍如下：
关于4G LTE V2X(Vehicle To Everything，车到万物)PC5物理信道格式基本结论总结如下：
1、包含下面4类物理信道和物理信号：
物理直通链路共享信道(Physical Sidelink Shared CHannel，PSSCH)：用于承载数据的信道；编码，速率匹配，交织等物理层处理机制与设备到设备(Device-to-Device，D2D)相同；
物理直通链路控制信道(Physical Sidelink Control CHannel，PSCCH)：用于承载控制信息信道，SA信令；编码，速率匹配，交织等物理层处理机制与D2D相同；
物理直通链路广播信道(Physical Sidelink Broadcast CHannel，PSBCH)：用于承载Sidelink广播信息，编码速率匹配，交织等物理层处理机制与D2D相同；
Sidelink主同步信号/Sidelink辅同步信号(PSSS/SSSS信号)：用于进行 Sidelink的同步。
2、PSCCH和PSSCH采用4列解调参考信号(Demodulation Reference Signal，DMRS)导频，其DMRS占用的正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)符号为{2，5，8，11}。
3、参见图1，Rel-14V2X中沿用Rel-12D2D帧结构的基本设计，传输时间间隔(Transmission Time Interval，TTI)长度为1ms，一个TTI包含两个时隙(slot)，子帧的第一个符号用于承载业务数据，接收端在该符号上进行自动增益控制(Automatic Gain Control，AGC)调整。子帧的最后一个符号用作保护间隔(Guard Period，GP)，GP采用打孔(Puncture)的方法进行RE的映射。
5G新空口(New Radio，NR)PC5定义的Sidelink物理信道和信号格式如下：
时隙结构：前有AGC，后有GP，中间功率变化有TP，其中，AGC和GP一般使用1个OFDM符号，在子载波间隔(SubCarrier Spacing，SCS)＝120KHz时可能使用2个OFDM符号。
针对高速设计，最高支持500Kmph的相对速度；
同步：同步子帧+同步块(SS/PBCH block，SSB)；
物理信道除了LTE PC5的四种物理信道之外，增加了物理直通链路反馈信道(Physical Sidelink Feedback Channel，PSFCH)；
物理信号除了LTE PC5的DMRS之外，增加了CSI-RS和PT-RS。
但是，现有技术中还没有基于Sidelink定位的定位参考信号。单独使用当前的CSI-RS、DMRS和SSB并不能满足Sidelink的定位性能指标，原因在于DMRS只能和数据同时存在，CSI-RS取决于配置，这两种信号无法作为通用的定位参考信号周期性发送；SSB存在于单独时隙，并且带宽有限，作为定位的定时测量值精度无法满足要求。
发明内容
本申请实施例提供了信号传输方法及装置，用以实现直通链路定位参考信号的传输，从而实现基于Sidelink的定位。
在发送端，本申请实施例提供的一种信号发送方法，包括：
确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息；
根据所述SPRS资源配置信息，通过直通链路向第二终端发送SPRS，用于所述第二终端基于该SPRS进行定位测量。
通过该方法，确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息；根据所述SPRS资源配置信息，通过直通链路向第二终端发送SPRS，用于所述第二终端基于该SPRS进行定位测量，从而实现了直通链路定位参考信号的传输，进而可以实现基于Sidelink的定位。
可选地，所述SPRS资源配置信息包括下列信息之一或组合：
SPRS资源集、SPRS资源、SPRS时域结构、SPRS频域结构、用于向第二终端发送SPRS的时隙序号。
可选地，所述SPRS资源集至少具有如下特点之一：
所述SPRS资源集包含至少一个SPRS资源，并且所述SPRS资源集中的所有SPRS资源和同一终端的天线阵列相关联；
针对新空口频段FR1和FR2，所述SPRS资源集中的每一SPRS资源的标识与一个终端的一个天线阵列相关联。
可选地，所述SPRS资源至少具有如下特点之一：
每个所述SPRS资源的梳状因子Comb-N资源单元图样被用来在频域上将SPRS序列映射到资源单元RE；
所述SPRS资源由以下至少一个参数描述：SPRS资源ID、序列ID、Comb-N取值、资源单元RE偏移、SPRS资源的初始时隙和符号、每个SPRS资源的符号个数、与同步块SSB的准共站址信息；
所述SPRS资源的符号个数是协议预定义的或者网络侧配置的；
所述SPRS资源Comb-N取值是协议预定义的或者网络侧配置的。
可选地，所述SPRS时域结构支持以下两种SPRS时域结构：
单一时隙结构：在每一时隙中按照从前往后的顺序依次放置自动增益控制AGC、SPRS和保护间隔GP；
时隙绑定结构：在连续多个时隙中按照从前往后的顺序依次放置AGC、SPRS和GP。
可选地，所述时隙绑定结构，用于广播模式下1个终端连续发送SPRS。
可选地，所述SPRS时域结构中，时域上SPRS占用的OFDM符号个数和位置是协议预定义的或者网络侧配置的。
可选地，所述SPRS频域结构支持以下两种SPRS频域结构：
第一种频域结构：连续多个资源单元RE占用全带宽，采用等间隔RE的梳状方式区分不同的SPRS资源；
第二种频域结构：全带宽被划分为多个不同的连续子频带，不同SPRS资源占用不同的子频带。
可选地，所述第一种频域结构中，频域上的梳状因子是协议预定义的或者网络侧配置的，不同的SPRS资源映射到不同的发送天线阵列上。
可选地，所述SPRS频域结构支持固定的RE图样和跳频的RE图样。
可选地，所述SPRS频域结构中的SPRS频域带宽是协议预定义的或者网络侧配置的，最大值为直通链路的最大系统带宽。
可选地，通过协议预定义或信令确定所述SPRS资源配置信息；其中，所述信令包括下列信令之一或组合：
来自服务基站下发的广播信令、下行控制信息DCI信令、NR无线空口Uu协议定义的定位专用信令、近距离通信端口PC5协议的定位专用信令。
相应地，在接收端，本申请实施例提供的一种信号接收方法，包括：
确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息，所述SPRS资源配置信息是第二终端发送的；
根据所述SPRS资源配置信息，通过直通链路接收第二终端发送的SPRS。
可选地，该方法还包括：
针对所述SPRS进行测量，得到定位测量值；
根据所述定位测量值，确定所述第二终端到所述第一终端的相对距离信息。
可选地，所述SPRS资源配置信息包括下列信息之一或组合：
SPRS资源集、SPRS资源、SPRS时域结构、SPRS频域结构、用于接收第二终端发送的SPRS的时隙序号。
可选地，所述SPRS资源集至少具有如下特点之一：
所述SPRS资源集包含至少一个SPRS资源，并且所述SPRS资源集中的所有SPRS资源和同一终端的天线阵列相关联；
针对新空口频段FR1和FR2，所述SPRS资源集中的每一SPRS资源的标识与一个终端的一个天线阵列相关联。
可选地，所述SPRS资源至少具有如下特点之一：
每个所述SPRS资源的梳状因子Comb-N资源单元图样被用来在频域上将SPRS序列映射到资源单元RE；
所述SPRS资源由以下至少一个参数描述：SPRS资源ID、序列ID、Comb-N取值、资源单元RE偏移、SPRS资源的初始时隙和符号、每个SPRS资源的符号个数、与同步块SSB的准共站址信息；
所述SPRS资源的符号个数是协议预定义的或者网络侧配置的；
所述SPRS资源Comb-N取值是协议预定义的或者网络侧配置的。
可选地，所述SPRS时域结构支持以下两种SPRS时域结构：
单一时隙结构：在每一时隙中按照从前往后的顺序依次放置AGC、SPRS和GP；
时隙绑定结构：在连续多个时隙中按照从前往后的顺序依次放置自动增益控制AGC、SPRS和保护间隔GP。
可选地，所述时隙绑定结构，用于广播模式下1个终端连续发送SPRS。
可选地，所述SPRS时域结构中，时域上SPRS占用的OFDM符号个数 和位置是协议预定义的或者网络侧配置的。
可选地，所述SPRS频域结构支持以下两种SPRS频域结构：
第一种频域结构：连续多个资源单元RE占用全带宽，采用等间隔RE的梳状方式区分不同的SPRS资源；
第二种频域结构：全带宽被划分为多个不同的连续子频带，不同SPRS资源占用不同的子频带。
可选地，所述第一种频域结构中，频域上的梳状因子是协议预定义的或者网络侧配置的，不同的SPRS资源映射到不同的发送天线阵列上。
可选地，所述SPRS频域结构支持固定的RE图样和跳频的RE图样。
可选地，所述SPRS频域结构中的SPRS频域带宽是协议预定义的或者网络侧配置的，最大值为直通链路的最大系统带宽。
可选地，通过协议预定义或信令确定所述SPRS资源配置信息；其中，所述信令包括下列信令之一或组合：
来自服务基站下发的广播信令、下行控制信息DCI信令、NR无线空口Uu协议定义的定位专用信令、近距离通信端口PC5协议的定位专用信令。
本申请实施例提供的一种信号发送装置，包括：
存储器，用于存储程序指令；
处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行下列过程：
确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息；
根据所述SPRS资源配置信息，通过直通链路向第二终端发送SPRS，用于所述第二终端基于该SPRS进行定位测量。
可选的，所述SPRS资源配置信息包括下列信息之一或组合：
SPRS资源集、SPRS资源、SPRS时域结构、SPRS频域结构、用于向第二终端发送SPRS的时隙序号。
可选的，所述SPRS资源集至少具有如下特点之一：
所述SPRS资源集包含至少一个SPRS资源，并且所述SPRS资源集中的所有SPRS资源和同一终端的天线阵列相关联；
针对新空口频段FR1和FR2，所述SPRS资源集中的每一SPRS资源的标识与一个终端的一个天线阵列相关联。
可选的，所述SPRS资源至少具有如下特点之一：
每个所述SPRS资源的梳状因子Comb-N资源单元图样被用来在频域上将SPRS序列映射到资源单元RE；
所述SPRS资源由以下至少一个参数描述：SPRS资源ID、序列ID、Comb-N取值、资源单元RE偏移、SPRS资源的初始时隙和符号、每个SPRS资源的符号个数、与同步块SSB的准共站址信息；
所述SPRS资源的符号个数是协议预定义的或者网络侧配置的；
所述SPRS资源Comb-N取值是协议预定义的或者网络侧配置的。
可选的，所述SPRS时域结构支持以下两种SPRS时域结构：
单一时隙结构：在每一时隙中按照从前往后的顺序依次放置自动增益控制AGC、SPRS和保护间隔GP；
时隙绑定结构：在连续多个时隙中按照从前往后的顺序依次放置AGC、SPRS和GP。
可选的，所述时隙绑定结构，用于广播模式下1个终端连续发送SPRS。
可选的，所述SPRS时域结构中，时域上SPRS占用的OFDM符号个数和位置是协议预定义的或者网络侧配置的。
可选的，所述SPRS频域结构支持以下两种SPRS频域结构：
第一种频域结构：连续多个资源单元RE占用全带宽，采用等间隔RE的梳状方式区分不同的SPRS资源；
第二种频域结构：全带宽被划分为多个不同的连续子频带，不同SPRS资源占用不同的子频带。
可选的，所述第一种频域结构中，频域上的梳状因子是协议预定义的或者网络侧配置的，不同的SPRS资源映射到不同的发送天线阵列上。
可选的，所述SPRS频域结构支持固定的RE图样和跳频的RE图样。
可选的，所述SPRS频域结构中的SPRS频域带宽是协议预定义的或者网络侧配置的，最大值为直通链路的最大系统带宽。
可选的，通过协议预定义或信令确定所述SPRS资源配置信息；其中，所述信令包括下列信令之一或组合：
来自服务基站下发的广播信令、下行控制信息DCI信令、NR无线空口Uu协议定义的定位专用信令、近距离通信端口PC5协议的定位专用信令。
本申请实施例提供的一种信号接收装置，包括：
存储器，用于存储程序指令；
处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行下列过程：
确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息，所述SPRS资源配置信息是第二终端发送的；
根据所述SPRS资源配置信息，通过直通链路接收第二终端发送的SPRS。
可选地，所述处理器还用于：
针对所述SPRS进行测量，得到定位测量值；
根据所述定位测量值，确定所述第二终端到所述第一终端的相对距离信息。
可选地，所述SPRS资源配置信息包括下列信息之一或组合：
SPRS资源集、SPRS资源、SPRS时域结构、SPRS频域结构、用于接收第二终端发送的SPRS的时隙序号。
可选地，所述SPRS资源集至少具有如下特点之一：
所述SPRS资源集包含至少一个SPRS资源，并且所述SPRS资源集中的所有SPRS资源和同一终端的天线阵列相关联；
针对新空口频段FR1和FR2，所述SPRS资源集中的每一SPRS资源的标识与一个终端的一个天线阵列相关联。
可选地，所述SPRS资源至少具有如下特点之一：
每个所述SPRS资源的梳状因子Comb-N资源单元图样被用来在频域上将SPRS序列映射到资源单元RE；
所述SPRS资源由以下至少一个参数描述：SPRS资源ID、序列ID、Comb-N取值、资源单元RE偏移、SPRS资源的初始时隙和符号、每个SPRS资源的符号个数、与同步块SSB的准共站址信息；
所述SPRS资源的符号个数是协议预定义的或者网络侧配置的；
所述SPRS资源Comb-N取值是协议预定义的或者网络侧配置的。
可选地，所述SPRS时域结构支持以下两种SPRS时域结构：
单一时隙结构：在每一时隙中按照从前往后的顺序依次放置AGC、SPRS和GP；
时隙绑定结构：在连续多个时隙中按照从前往后的顺序依次放置自动增益控制AGC、SPRS和保护间隔GP。
可选地，所述时隙绑定结构，用于广播模式下1个终端连续发送SPRS。
可选地，所述SPRS时域结构中，时域上SPRS占用的OFDM符号个数和位置是协议预定义的或者网络侧配置的。
可选地，所述SPRS频域结构支持以下两种SPRS频域结构：
第一种频域结构：连续多个资源单元RE占用全带宽，采用等间隔RE的梳状方式区分不同的SPRS资源；
第二种频域结构：全带宽被划分为多个不同的连续子频带，不同SPRS资源占用不同的子频带。
可选地，所述第一种频域结构中，频域上的梳状因子是协议预定义的或者网络侧配置的，不同的SPRS资源映射到不同的发送天线阵列上。
可选地，所述SPRS频域结构支持固定的RE图样和跳频的RE图样。
可选地，所述SPRS频域结构中的SPRS频域带宽是协议预定义的或者网络侧配置的，最大值为直通链路的最大系统带宽。
可选地，通过协议预定义或信令确定所述SPRS资源配置信息；其中，所述信令包括下列信令之一或组合：
来自服务基站下发的广播信令、下行控制信息DCI信令、NR无线空口Uu协议定义的定位专用信令、近距离通信端口PC5协议的定位专用信令。
本申请实施例提供的一种信号发送装置，包括：
确定单元，用于确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息；
发送单元，用于根据所述SPRS资源配置信息，通过直通链路向第二终端发送SPRS，用于所述第二终端基于该SPRS进行定位测量。
本申请实施例提供的一种信号接收装置，包括：
确定单元，用于确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息，所述SPRS资源配置信息是第二终端发送的；
接收单元，用于根据所述SPRS资源配置信息，通过直通链路接收第二终端发送的SPRS。
本申请另一实施例提供了一种计算机存储介质，所述计算机存储介质存储有计算机可执行指令，所述计算机可执行指令用于使所述计算机执行上述任一种方法。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简要介绍，显而易见地，下面描述中的附图仅是本申请的一些实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为LTE PC5 V2V的PSCCH信道及PSSCH信道的帧结构示意图；
图2为本申请实施例提供的一种信号发送方法的流程示意图；
图3为本申请实施例提供的一种信号接收方法的流程示意图；
图4A为本申请实施例提供的第一种类型的SPRS时域结构示意图；
图4B为本申请实施例提供的第二种类型的SPRS时域结构示意图；
图5为本申请实施例提供的一种SPRS信号模式(Pattern)示意图；
图6为本申请实施例提供的另一种SPRS信号模式(Pattern)示意图；
图7为本申请实施例提供的基于RSS的单车到单车的UE相对定位示意图；
图8为本申请实施例提供的一种信号传输装置的结构示意图；
图9为本申请实施例提供的一种信号发送装置的结构示意图；
图10为本申请实施例提供的一种信号接收装置的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，并不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请实施例提供了信号传输方法及装置，用以实现直通链路定位参考信号的传输，从而实现基于Sidelink的定位。
其中，方法和装置是基于同一申请构思的，由于方法和装置解决问题的原理相似，因此装置和方法的实施可以相互参见，重复之处不再赘述。
本申请实施例提供的技术方案可以适用于多种系统，尤其是5G系统。例如适用的系统可以是全球移动通信系统(Global System for Mobile communication，GSM)、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)通用分组无线业务(general packet radio service，GPRS)系统、长期演进LTE系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time division duplex，TDD)、通用移动系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)系统、5G系统以及5G NR系统等。这多种系统中均包括终端设备和网络设备。
本申请实施例涉及的终端设备，可以是指向用户提供语音和/或数据连通 性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。在不同的系统中，终端设备的名称可能也不相同，例如在5G系统中，终端设备可以称为用户设备(user equipment，UE)。无线终端设备可以经RAN与一个或多个核心网进行通信，无线终端设备可以是移动终端设备，如移动电话(或称为“蜂窝”电话)和具有移动终端设备的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(session initiated protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)等设备。无线终端设备也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点(access point)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user agent)、用户装置(user device)，本申请实施例中并不限定。
本申请实施例涉及的网络设备，可以是基站，该基站可以包括多个小区。根据具体应用场合不同，基站又可以称为接入点，或者可以是指接入网中在空中接口上通过一个或多个扇区与无线终端设备通信的设备，或者其它名称。网络设备可用于将收到的空中帧与网际协议(internet protocol，IP)分组进行相互转换，作为无线终端设备与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议(IP)通信网络。网络设备还可协调对空中接口的属性管理。例如，本申请实施例涉及的网络设备可以是全球移动通信系统GSM或码分多址CDMA接入中的网络设备(base transceiver station，BTS)，也可以是带宽码分多址接入(wide-band code division multiple access，WCDMA)中的网络设备(NodeB)，还可以是长期演进LTE系统中的演进型网络设备(evolutional node B，eNB或e-NodeB)、5G网络架构(next generation system)中的5G基站，也可是家庭演进基站(home evolved node B，HeNB)、中继节 点(relay node)、家庭基站(femto)、微微基站(pico)等，本申请实施例中并不限定。
下面结合说明书附图对本申请各个实施例进行详细描述。需要说明的是，本申请实施例的展示顺序仅代表实施例的先后顺序，并不代表实施例所提供的技术方案的优劣。
本申请实施例提出了一种基于Sidelink的PRS(简称SPRS)信号的发送和接收方法，用于基于Sidelink的UE位置定位。
参见图2，在发送端，例如在智能网联汽车技术用户设备1(Vehicle-to-Everything User Equipment#1，V2X-UE1，V-UE1)侧，本申请实施例提供的一种信号发送方法，包括下列步骤：
S101、确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息；
例如，第一终端是V-UE1，通过协议预定义或者信令获取本V-UE1在Sidelink链路上的SPRS2资源配置信息，用于发送SPRS2信号。
本申请实施例中将发给第二终端V-UE2的SPRS称为SPRS2，将V-UE2发给V-UE1的SPRS(即V-UE1接收的SPRS)称为SPRS1。
其中，SPRS2资源配置信息包含下列信息之一或组合：SPRS2资源集、SPRS2资源、SPRS2时域结构和SPRS2频域结构，以及用于向其它V-UE2发送SPRS2的slot序号n。
所述信令可以是来自Uu口的服务基站下发的广播信令、下行控制信息(Downlink Control Information，DCI)信令、定位专用信令，或者近距离通信端口PC5协议的定位专用信令。
S102、根据所述SPRS资源配置信息，通过直通链路向第二终端发送SPRS，用于所述第二终端基于该SPRS进行定位测量。
例如，根据所述SPRS2资源配置信息，在Slot#n，V-UE1向V-UE2发送SPRS2信号，用于V-UE2基于该SPRS2信号进行定位测量，并且计算V-UE1到V-UE2的相对距离信息。
相应地，在接收端，例如在V-UE1侧，参见图3，本申请实施例提供的一种信号接收方法，包括：
S201、确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息，所述SPRS资源配置信息是第二终端发送的；
例如，通过协议预定义或者信令获取来自V-UE2的本V-UE1在Sidelink链路上的SPRS1资源配置信息，用于接收SPRS1信号。
S202、根据所述SPRS资源配置信息，通过直通链路接收第二终端发送的SPRS。
例如，在Slot#m，V-UE1接收V-UE2发送的SPRS1信号。
其中，所述配置信息包含下列信息之一或组合：SPRS1资源集、SPRS1资源、SPRS1时域结构和SPRS1频域结构，以及用于接收来自V-UE2的SPRS1的slot序号m。
其中，信令可以是来自Uu口的服务基站下发的广播信令、DCI信令、定位专用信令，或者PC5协议的定位专用信令。
可选地，该方法还包括：
针对所述SPRS进行测量，得到定位测量值；
根据所述定位测量值，确定所述第二终端到所述第一终端的相对距离信息。
例如，V-UE1针对SPRS1信号进行测量，得到定位测量值，包括但不限于信号强度(Received Signal Strength，RSS)、到达时间/传播时延(Time Of Arrival，TOA)、和到达角度(Angle Of Arrival，AOA)等。
V-UE1根据上述定位测量值，计算得到V-UE2到V-UE1的相对距离信息。
需要说明的是，不同V-UE之间的SPRS信号(例如：上述的SPRS1和SPRS2)可以是频分复用(Frequency Division Multiplexing，FDM)、码分复用(Code Division Multiplexing，CDM)或者时分复用(Time Division Multiplexing，TDM)，可以采用下面两种方式进行配置：协议预定义、信令配置(广播信令、物理层DCI信令和专用定位信令，Uu口配置或者PC5配置)。
除了V-UE1之外，其余UE(例如：V-UE2)都适用本申请实施例提供的上述任一方法。
下面给出基于Sidelink的SPRS信号设计。
本申请实施例提供的基于Sidelink的SPRS信号，采用SPRS资源集(SPRS resource set)和SPRS资源(SPRS resource)的两级结构。
例如，针对新空口NR频段1(Frequency Range 1，FR1)，默认配置SPRS资源集(SPRS resource set)只包含1个SPRS资源(SPRS resource)，原因是V-UE的天线阵列(Panel)包含的天线数较少，尤其是在FR1，一般不会做波束扫描(beam sweeping)；NR频段2(Frequency Range 2，FR2)，SPRS可能做波束扫描，不会做波束赋形(beam forming)。
关于本申请实施例提供的SPRS资源集：
一个SPRS资源集是包含SPRS资源的一个集合，其中的每一个SPRS资源具有一个SPRS资源ID，并且一个SPRS资源集的所有SPRS资源和同一个V-UE的天线阵列(即Panel)相关联；
针对FR1和FR2，一个SPRS资源集中的一个SPRS资源ID与从单个V-UE发送的单个天线阵列相关联，V-UE可以发送一个或多个天线阵列。
Sidelink的SPRS与Uu口的PRS差异在于：Uu口的PRS与TRP关联，Sidelink的SPRS与V-UE的天线阵列关联。
关于本申请实施例提供的SPRS资源：
每个SPRS资源的梳状因子N(Comb Factor-N，Comb-N)资源单元图样用于将SPRS序列映射到频域上的资源单元，Comb-N图样(pattern)可以跨SPRS符号在频域中偏移；
SPRS资源至少由以下参数描述：SPRS资源ID、序列ID、Comb-N取值、RE偏移、SPRS资源的初始时隙和符号、每个SPRS资源的符号个数(SPRS资源的持续时间)和与同步块SSB的准共站址(Quasi-CoLocation，QCL)信息；
SPRS资源的符号个数通过协议预定义或者网络侧配置，例如：可以从集 合{2,4,6}中灵活配置；
SPRS资源Comb-N取值协议预定义或者网络侧配置，例如：可以从集合{2,4,6}中灵活配置。
关于本申请实施例提供的SPRS时域结构：
支持以下两种SPRS时域结构。
Type 1(单一Slot结构)：在一个slot的前段放置自动增益控制AGC(包括1个或者1个以上OFDM符号)、后端放置保护间隔GP(包括1个或者1个以上OFDM符号)，中间SPRS的个数和位置是协议预定义的或者灵活网络侧配置的；
Type 2(Slot Bundling结构)：在连续N个slot的最前段放置AGC(1个或者1个以上OFDM符号)，最后端放置GP(1个或者1个以上OFDM符号)，中间SPRS个数和位置是协议预定义的或者灵活网络侧配置的。
其中，Type2用于广播模式下1个V-UE连续发送SPRS，不允许多个V-UE来使用连续的两个slot。
图4A和图4B给出了上述两种SPRS的时域结构，其中，图4B中N＝2，SPRS资源包含2个OFDM符号。
其中，时域上SPRS占用的OFDM符号个数可配置，通常配置多个OFDM符号，以支持V-UE进行TOA、AoA和多普勒等测量。
关于本申请实施例提供的SPRS频域结构：
SPRS频域带宽是协议预定义的或者网络侧配置的，最大值为Sidelink的最大系统带宽。
支持以下两种SPRS频域结构。
第一种频域结构(Pattern Type A)：连续RE占用全带宽，采用梳状因子N(Comb Factor-N，Comb-N)方式区分不同的SPRS资源；
第二种频域结构(Pattern Type B)：把全带宽划分为N个不同的连续子频带，不同SPRS资源占用不同的子频带。
针对Type A，频域上的Comb-N因子是协议预定义的或者网络侧配置， 包含{1,2,4}，其中，V-UE的发送天线个数N_Tx典型取值为2或者4，不同的SPRS resource可能映射到不同的发送天线阵列上。例如：V-UE具有4个发送天线阵列时，每个天线阵列分别映射不同的SPRS resource。
针对Pattern Type A和Type B，都是支持固定的RE图样和跳频的RE图样。
图5给出了SPRS信号的Pattern Type A示意图。梳状因子N(Comb-N)等价于一个频域抽取因子，使得同一个SPRS资源使用的子载波具有梳状频谱。在图5所示的第一个PRB中，SPRS资源1/2/3/4分别使用子载波4*n+[0/1/2/3]，其中，n＝0，1，2和3。SPRS资源1使用间隔为4的子载波0，4，8；SPRS资源2使用间隔为4的子载波1，5，9；SPRS资源3使用间隔为4的子载波2，6，10；SPRS资源4使用间隔为4的子载波3，7，11。
图6给出了SPRS信号的Pattern Type B示意图。其中，整个带宽BW划分为N＝2段，每个PRS resource占用一段连续的频段，并且可以跳频。
下面给出几个具体实施例的介绍。
实施例1：基于SPRS的RSS测量值的相对定位。
本实施例1中，基于RSS的单车到单车的V-UE相对定位场景如图7所示。其中，不同V-UE之间的SPRS信号(例如：上述的SPRS1和SPRS2)复用方式为TDM，可以采用协议预定义的方式进行配置。
V-UE1发送SPRS的方法包括：
Step1、通过协议预定义获取本V-UE1在Sidelink链路上发送的SPRS2资源配置信息。配置信息包含SPRS2资源集、SPRS2资源、SPRS2时域结构和SPRS2频域结构，以及用于向其它V-UE2发送SPRS2的slot序号n。其中，SPRS2资源集包含1个SPRS2资源，SPRS2资源包含2个OFDM符号，Comb因子为2，SPRS2时域结构采用图4A所示的Type A，SPRS2频域结构采用图5所示的Pattern Type A。
Step2、在Slot#n，V-UE1向V-UE2发送SPRS2信号，用于V-UE2基于该信号进行定位测量，并且计算V-UE1到V-UE2的相对距离信息。
V-UE1接收SPRS方法包括：
Step1、通过协议预定义获取本V-UE1接收来自V-UE2在Sidelink链路上的SPRS1资源配置信息，其中，配置信息包含SPRS1资源集、SPRS1资源、SPRS1时域结构和SPRS1频域结构，以及用于接收来自V-UE2的SPRS1的slot序号m。
Step2、在Slot#m，V-UE1接收V-UE2发送的SPRS1信号。
Step3、V-UE1针对SPRS1信号进行测量，得到定位测量值RSS。
Step4、V-UE1根据上述定位测量值RSS，以及预先配置的或者实时估计得到的路损模型，计算得到V-UE2到V-UE1的相对距离信息。
同理，V-UE2的SPRS发送和接收方法和V-UE1采用相同的操作。差异在于V-UE2在Slot#n接收V-UE1发送的SPRS2信号；V-UE2在slot#m向V-UE1发送SPRS1信号。
实施例2：基于SPRS的TOA测量值的相对定位。
本实施例2中，基于TOA的单车到单车的相对定位场景如图7所示。其中，不同V-UE之间的SPRS信号(例如：上述的SPRS1和SPRS2)采用TDM复用，可以采用Uu口的服务基站下发的广播信令、DCI信令、定位专用信令的方式进行配置。
V-UE1发送SPRS方法包括：
Step1、通过信令获取本V-UE1在Sidelink链路上发送的SPRS2资源配置信息。
其中，配置信息包含SPRS2资源集、SPRS2资源、SPRS2时域结构和SPRS2频域结构，以及用于向其它V-UE2发送SPRS2的slot序号n。其中，SPRS2资源集包含1个SPRS2资源，SPRS2资源包含2个OFDM符号，Comb因子为2，SPRS2时域结构采用图4B所示的Type B，SPRS2频域结构采用图5所示的Pattern Type A。
所述信令可以是来自Uu无线链路的服务基站下发的广播信令、DCI信令或者定位专用信令。
Step2、在Slot#n，V-UE1向V-UE2发送SPRS2信号，用于V-UE2基于该信号进行TOA定位测量，并且计算V-UE1到V-UE2的相对距离信息。
V-UE1接收SPRS方法包括：
Step1、通过信令获取本V-UE1接收来自V-UE2在Sidelink链路上的SPRS1资源配置信息。
其中，配置信息包含SPRS1资源集、SPRS1资源、SPRS1时域结构和SPRS1频域结构，以及用于接收来自V-UE2的SPRS1的slot序号m。
所述信令可以是来自Uu口的服务基站下发的广播信令、DCI信令或者定位专用信令。
Step2、在Slot#m，V-UE1接收V-UE2发送的SPRS1信号。
Step3、V-UE1针对SPRS1信号进行测量，得到定位测量值TOA。
Step4、V-UE1根据上述定位测量值TOA，计算得到V-UE2到V-UE1的相对距离信息。
同理，V-UE2的发送和接收方法和V-UE1采用相同的操作。差异在于V-UE2在Slot#n接收V-UE1发送的SPRS2信号；V-UE2在slot#m向V-UE1发送SPRS1信号。
实施例3：基于SPRS的TOA+AoA测量值的相对定位。
本实施例3中，基于TOA+AoA的单车到单车的相对定位场景如图7所示。其中，不同V-UE之间的SPRS信号(例如：上述的SPRS1和SPRS2)采用TDM复用，采用PC5协议的定位专用信令的方式进行配置。
V-UE1发送SPRS方法包括：
Step1、通过信令获取本V-UE1在Sidelink链路上发送的SPRS2资源配置信息。
配置信息包含SPRS2资源集、SPRS2资源、SPRS2时域结构和SPRS2频域结构，以及用于向其它V-UE2发送SPRS2的slot序号n。其中，SPRS2资源集包含1个SPRS2资源，SPRS2资源包含2个OFDM符号，Comb因子为2，SPRS2时域结构采用图4B所示的Type B，SPRS2频域结构采用图6所 示的Pattern Type B。
所述信令可以是来自PC5协议的定位专用信令。
Step2、在Slot#n，V-UE1向V-UE2发送SPRS2信号，用于V-UE2基于该信号进行TOA+AoA定位测量，并且计算V-UE1到V-UE2的相对距离信息。
V-UE1接收SPRS的方法包括：
Step1、通过信令获取本V-UE1接收来自V-UE2在Sidelink链路上的SPRS1资源配置信息。
其中，配置信息包含SPRS1资源集、SPRS1资源、SPRS1时域结构和SPRS1频域结构，以及用于接收来自V-UE2的SPRS1的slot序号m。
所述信令是来自PC5协议的定位专用信令。
Step2、在Slot#m，V-UE1接收V-UE2发送的SPRS1信号。
Step3、V-UE1针对SPRS1信号进行测量，得到定位测量值TOA和AoA。
Step4、V-UE1根据上述定位测量值TOA和AoA，计算得到V-UE2到V-UE1的相对距离信息。
同理，V-UE2的发送和接收方法和V-UE1采用相同的操作。差异在于V-UE2在Slot#n接收V-UE1发送的SPRS2信号；V-UE2在slot#m向V-UE1发送SPRS1信号。
综上所述，本申请实施例提出了一种基于Sidelink的SPRS信号发送和接收方法，用于Sidelink的UE位置定位。
相对于Sidelink现有的DMRS只能和数据同时存在，CSI-RS取决于配置，这两种信号无法作为通用的定位参考信号周期性发送；本申请实施例提出的SPRS信号可以周期性发送，发送时刻与是否发送数据无关，从而能够满足定位需求。
相对于Sidelink现有的SSB存在于单独slot，并且带宽有限而导致定位的定时测量值精度无法满足要求的问题；本申请实施例提出的SPRS信号的频域带宽可配置，最大值为Sidelink的最大系统带宽，因此，能够满足定位的定时测量值精度。
参见图8，本申请实施例提供的一种信号传输装置，包括：
存储器620，用于存储程序指令；
处理器600，用于调用所述存储器中存储的程序指令，按照获得的程序执行本申请实施例提供的任一所述的方法。
具体地，若所述信号传输装置用于SPRS信号发送，则处理器600具体用于：
确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息；
根据所述SPRS资源配置信息，通过直通链路向第二终端发送SPRS，用于所述第二终端基于该SPRS进行定位测量。
可选地，所述SPRS资源配置信息包括下列信息之一或组合：
SPRS资源集、SPRS资源、SPRS时域结构、SPRS频域结构、用于向第二终端发送SPRS的时隙序号。
具体地，若所述信号传输装置用于SPRS信号接收，则处理器600具体用于：
确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息，所述SPRS资源配置信息是第二终端发送的；
根据所述SPRS资源配置信息，通过直通链路接收第二终端发送的SPRS。
可选地，处理器600还用于：
针对所述SPRS进行测量，得到定位测量值；
根据所述定位测量值，确定所述第二终端到所述第一终端的相对距离信息。
可选地，所述SPRS资源配置信息包括下列信息之一或组合：
SPRS资源集、SPRS资源、SPRS时域结构、SPRS频域结构、用于接收第二终端发送的SPRS的时隙序号。
可选地，所述SPRS资源集至少具有如下特点之一：
所述SPRS资源集包含至少一个SPRS资源，并且所述SPRS资源集中的 所有SPRS资源和同一终端的天线阵列相关联；
针对新空口频段FR1和FR2，所述SPRS资源集中的每一SPRS资源的标识与一个终端的一个天线阵列相关联。
可选地，所述SPRS资源至少具有如下特点之一：
每个所述SPRS资源的梳状因子Comb-N资源单元图样被用来在频域上将SPRS序列映射到资源单元RE；
所述SPRS资源由以下至少一个参数描述：SPRS资源ID、序列ID、Comb-N取值、资源单元RE偏移、SPRS资源的初始时隙和符号、每个SPRS资源的符号个数、与同步块SSB的准共站址信息；
所述SPRS资源的符号个数是协议预定义的或者网络侧配置的；
所述SPRS资源Comb-N取值是协议预定义的或者网络侧配置的。
可选地，所述SPRS时域结构支持以下两种SPRS时域结构：
单一时隙结构：在每一时隙中按照从前往后的顺序依次放置AGC、SPRS和GP；
时隙绑定结构：在连续多个时隙中按照从前往后的顺序依次放置自动增益控制AGC、SPRS和保护间隔GP。
可选地，所述时隙绑定结构，用于广播模式下1个终端连续发送SPRS。
可选地，所述SPRS时域结构中，时域上SPRS占用的OFDM符号个数和位置是协议预定义的或者网络侧配置的。
可选地，所述SPRS频域结构支持以下两种SPRS频域结构：
第一种频域结构：连续多个资源单元RE占用全带宽，采用等间隔RE的梳状方式区分不同的SPRS资源；
第二种频域结构：全带宽被划分为多个不同的连续子频带，不同SPRS资源占用不同的子频带。
可选地，所述第一种频域结构中，频域上的梳状因子是协议预定义的或者网络侧配置的，不同的SPRS资源映射到不同的发送天线阵列上。
可选地，所述SPRS频域结构支持固定的RE图样和跳频的RE图样。
可选地，所述SPRS频域结构中的SPRS频域带宽是协议预定义的或者网络侧配置的，最大值为直通链路的最大系统带宽。
可选地，通过协议预定义或信令确定所述SPRS资源配置信息；其中，所述信令包括下列信令之一或组合：
来自服务基站下发的广播信令、下行控制信息DCI信令、NR无线空口Uu协议定义的定位专用信令、近距离通信端口PC5协议的定位专用信令。
收发机610，用于在处理器600的控制下接收和发送数据。
其中，在图8中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器600代表的一个或多个处理器和存储器620代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机610可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。针对不同的用户设备，用户接口630还可以是能够外接内接需要设备的接口，连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器600负责管理总线架构和通常的处理，存储器620可以存储处理器600在执行操作时所使用的数据。
可选的，处理器600可以是中央处理器(Center Processing Unit，CPU)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field－Programmable Gate Array，FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device，CPLD)。
本申请实施例提供的任一装置，可以是任意一种终端，该终端可以同时具有SPRS信号的发送和接收功能。
参见图9，本申请实施例提供的一种信号发送装置，包括：
确定单元11，用于确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息；
发送单元12，用于根据所述SPRS资源配置信息，通过直通链路向第二 终端发送SPRS，用于所述第二终端基于该SPRS进行定位测量。
可选的，所述SPRS资源配置信息包括下列信息之一或组合：
SPRS资源集、SPRS资源、SPRS时域结构、SPRS频域结构、用于向第二终端发送SPRS的时隙序号。
可选的，所述SPRS资源集至少具有如下特点之一：
所述SPRS资源集包含至少一个SPRS资源，并且所述SPRS资源集中的所有SPRS资源和同一终端的天线阵列相关联；
针对新空口频段FR1和FR2，所述SPRS资源集中的每一SPRS资源的标识与一个终端的一个天线阵列相关联。
可选的，所述SPRS资源至少具有如下特点之一：
每个所述SPRS资源的梳状因子Comb-N资源单元图样被用来在频域上将SPRS序列映射到资源单元RE；
所述SPRS资源由以下至少一个参数描述：SPRS资源ID、序列ID、Comb-N取值、资源单元RE偏移、SPRS资源的初始时隙和符号、每个SPRS资源的符号个数、与同步块SSB的准共站址信息；
所述SPRS资源的符号个数是协议预定义的或者网络侧配置的；
所述SPRS资源Comb-N取值是协议预定义的或者网络侧配置的。
可选的，所述SPRS时域结构支持以下两种SPRS时域结构：
单一时隙结构：在每一时隙中按照从前往后的顺序依次放置自动增益控制AGC、SPRS和保护间隔GP；
时隙绑定结构：在连续多个时隙中按照从前往后的顺序依次放置AGC、SPRS和GP。
可选的，所述时隙绑定结构，用于广播模式下1个终端连续发送SPRS。
可选的，所述SPRS时域结构中，时域上SPRS占用的OFDM符号个数和位置是协议预定义的或者网络侧配置的。
可选的，所述SPRS频域结构支持以下两种SPRS频域结构：
第一种频域结构：连续多个资源单元RE占用全带宽，采用等间隔RE的 梳状方式区分不同的SPRS资源；
第二种频域结构：全带宽被划分为多个不同的连续子频带，不同SPRS资源占用不同的子频带。
可选的，所述第一种频域结构中，频域上的梳状因子是协议预定义的或者网络侧配置的，不同的SPRS资源映射到不同的发送天线阵列上。
可选的，所述SPRS频域结构支持固定的RE图样和跳频的RE图样。
可选的，所述SPRS频域结构中的SPRS频域带宽是协议预定义的或者网络侧配置的，最大值为直通链路的最大系统带宽。
可选的，通过协议预定义或信令确定所述SPRS资源配置信息；其中，所述信令包括下列信令之一或组合：
来自服务基站下发的广播信令、下行控制信息DCI信令、NR无线空口Uu协议定义的定位专用信令、近距离通信端口PC5协议的定位专用信令。
参见图10，本申请实施例提供的一种信号接收装置，包括：
确定单元21，用于确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息，所述SPRS资源配置信息是第二终端发送的；
接收单元22，用于根据所述SPRS资源配置信息，通过直通链路接收第二终端发送的SPRS。
可选地，所述确定单元21还用于：
针对所述SPRS进行测量，得到定位测量值；
根据所述定位测量值，确定所述第二终端到所述第一终端的相对距离信息。
可选地，所述SPRS资源配置信息包括下列信息之一或组合：
SPRS资源集、SPRS资源、SPRS时域结构、SPRS频域结构、用于接收第二终端发送的SPRS的时隙序号。
可选地，所述SPRS资源集至少具有如下特点之一：
所述SPRS资源集包含至少一个SPRS资源，并且所述SPRS资源集中的所有SPRS资源和同一终端的天线阵列相关联；
针对新空口频段FR1和FR2，所述SPRS资源集中的每一SPRS资源的标识与一个终端的一个天线阵列相关联。
可选地，所述SPRS资源至少具有如下特点之一：
每个所述SPRS资源的梳状因子Comb-N资源单元图样被用来在频域上将SPRS序列映射到资源单元RE；
所述SPRS资源由以下至少一个参数描述：SPRS资源ID、序列ID、Comb-N取值、资源单元RE偏移、SPRS资源的初始时隙和符号、每个SPRS资源的符号个数、与同步块SSB的准共站址信息；
所述SPRS资源的符号个数是协议预定义的或者网络侧配置的；
所述SPRS资源Comb-N取值是协议预定义的或者网络侧配置的。
可选地，所述SPRS时域结构支持以下两种SPRS时域结构：
单一时隙结构：在每一时隙中按照从前往后的顺序依次放置AGC、SPRS和GP；
时隙绑定结构：在连续多个时隙中按照从前往后的顺序依次放置自动增益控制AGC、SPRS和保护间隔GP。
可选地，所述时隙绑定结构，用于广播模式下1个终端连续发送SPRS。
可选地，所述SPRS时域结构中，时域上SPRS占用的OFDM符号个数和位置是协议预定义的或者网络侧配置的。
可选地，所述SPRS频域结构支持以下两种SPRS频域结构：
第一种频域结构：连续多个资源单元RE占用全带宽，采用等间隔RE的梳状方式区分不同的SPRS资源；
第二种频域结构：全带宽被划分为多个不同的连续子频带，不同SPRS资源占用不同的子频带。
可选地，所述第一种频域结构中，频域上的梳状因子是协议预定义的或者网络侧配置的，不同的SPRS资源映射到不同的发送天线阵列上。
可选地，所述SPRS频域结构支持固定的RE图样和跳频的RE图样。
可选地，所述SPRS频域结构中的SPRS频域带宽是协议预定义的或者网 络侧配置的，最大值为直通链路的最大系统带宽。
可选地，通过协议预定义或信令确定所述SPRS资源配置信息；其中，所述信令包括下列信令之一或组合：
来自服务基站下发的广播信令、下行控制信息DCI信令、NR无线空口Uu协议定义的定位专用信令、近距离通信端口PC5协议的定位专用信令。
需要说明的是，本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
本申请实施例提供了一种计算设备，该计算设备具体可以为桌面计算机、便携式计算机、智能手机、平板电脑、个人数字助理PDA等。该计算设备可以包括中央处理器CPU、存储器、输入/输出设备等，输入设备可以包括键盘、鼠标、触摸屏等，输出设备可以包括显示设备，如液晶显示器(Liquid Crystal Display，LCD)、阴极射线管(Cathode Ray Tube，CRT)等。
存储器可以包括只读存储器(ROM)和随机存取存储器(RAM)，并向处理器提供存储器中存储的程序指令和数据。在本申请实施例中，存储器可以用于存储本申请实施例提供的任一所述方法的程序。
处理器通过调用存储器存储的程序指令，处理器用于按照获得的程序指令执行本申请实施例提供的任一所述方法。
本申请实施例提供了一种计算机存储介质，用于储存为上述本申请实施例提供的装置所用的计算机程序指令，其包含用于执行上述本申请实施例提供的任一方法的程序。
所述计算机存储介质可以是计算机能够存取的任何可用介质或数据存储设备，包括但不限于磁性存储器(例如软盘、硬盘、磁带、磁光盘(MO)等)、光学存储器(例如CD、DVD、BD、HVD等)、以及半导体存储器(例如ROM、EPROM、EEPROM、非易失性存储器(NAND FLASH)、固态硬盘(SSD))等。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (30)

  1. 一种信号发送方法，其特征在于，该方法包括：
    确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息；
    根据所述SPRS资源配置信息，通过直通链路向第二终端发送SPRS，用于所述第二终端基于该SPRS进行定位测量。
  2. 根据权利要求1所述的方法，其特征在于，所述SPRS资源配置信息包括下列信息之一或组合：
    SPRS资源集、SPRS资源、SPRS时域结构、SPRS频域结构、用于向第二终端发送SPRS的时隙序号。
  3. 根据权利要求2所述的方法，其特征在于，所述SPRS资源集至少具有如下特点之一：
    所述SPRS资源集包含至少一个SPRS资源，并且所述SPRS资源集中的所有SPRS资源和同一终端的天线阵列相关联；
    针对新空口频段FR1和FR2，所述SPRS资源集中的每一SPRS资源的标识与一个终端的一个天线阵列相关联。
  4. 根据权利要求2所述的方法，其特征在于，所述SPRS资源至少具有如下特点之一：
    每个所述SPRS资源的梳状因子Comb-N资源单元图样被用来在频域上将SPRS序列映射到资源单元RE；
    所述SPRS资源由以下至少一个参数描述：SPRS资源ID、序列ID、Comb-N取值、资源单元RE偏移、SPRS资源的初始时隙和符号、每个SPRS资源的符号个数、与同步块SSB的准共站址信息；
    所述SPRS资源的符号个数是协议预定义的或者网络侧配置的；
    所述SPRS资源Comb-N取值是协议预定义的或者网络侧配置的。
  5. 根据权利要求2所述的方法，其特征在于，所述SPRS时域结构支持 以下两种SPRS时域结构：
    单一时隙结构：在每一时隙中按照从前往后的顺序依次放置自动增益控制AGC、SPRS和保护间隔GP；
    时隙绑定结构：在连续多个时隙中按照从前往后的顺序依次放置AGC、SPRS和GP。
  6. 根据权利要求5所述的方法，其特征在于，所述时隙绑定结构，用于广播模式下1个终端连续发送SPRS。
  7. 根据权利要求5所述的方法，其特征在于，所述SPRS时域结构中，时域上SPRS占用的OFDM符号个数和位置是协议预定义的或者网络侧配置的。
  8. 根据权利要求2所述的方法，其特征在于，所述SPRS频域结构支持以下两种SPRS频域结构：
    第一种频域结构：连续多个资源单元RE占用全带宽，采用等间隔RE的梳状方式区分不同的SPRS资源；
    第二种频域结构：全带宽被划分为多个不同的连续子频带，不同SPRS资源占用不同的子频带。
  9. 根据权利要求8所述的方法，其特征在于，所述第一种频域结构中，频域上的梳状因子是协议预定义的或者网络侧配置的，不同的SPRS资源映射到不同的发送天线阵列上。
  10. 根据权利要求8所述的方法，其特征在于，所述SPRS频域结构支持固定的RE图样和跳频的RE图样。
  11. 根据权利要求2所述的方法，其特征在于，所述SPRS频域结构中的SPRS频域带宽是协议预定义的或者网络侧配置的，最大值为直通链路的最大系统带宽。
  12. 根据权利要求1所述的方法，其特征在于，通过协议预定义或信令确定所述SPRS资源配置信息；其中，所述信令包括下列信令之一或组合：
    来自服务基站下发的广播信令、下行控制信息DCI信令、NR无线空口 Uu协议定义的定位专用信令、近距离通信端口PC5协议的定位专用信令。
  13. 一种信号接收方法，其特征在于，包括：
    确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息，所述SPRS资源配置信息是第二终端发送的；
    根据所述SPRS资源配置信息，通过直通链路接收第二终端发送的SPRS。
  14. 根据权利要求13所述的方法，其特征在于，该方法还包括：
    针对所述SPRS进行测量，得到定位测量值；
    根据所述定位测量值，确定所述第二终端到所述第一终端的相对距离信息。
  15. 根据权利要求13所述的方法，其特征在于，所述SPRS资源配置信息包括下列信息之一或组合：
    SPRS资源集、SPRS资源、SPRS时域结构、SPRS频域结构、用于接收第二终端发送的SPRS的时隙序号。
  16. 根据权利要求15所述的方法，其特征在于，所述SPRS资源集至少具有如下特点之一：
    所述SPRS资源集包含至少一个SPRS资源，并且所述SPRS资源集中的所有SPRS资源和同一终端的天线阵列相关联；
    针对新空口频段FR1和FR2，所述SPRS资源集中的每一SPRS资源的标识与一个终端的一个天线阵列相关联。
  17. 根据权利要求15所述的方法，其特征在于，所述SPRS资源至少具有如下特点之一：
    每个所述SPRS资源的梳状因子Comb-N资源单元图样被用来在频域上将SPRS序列映射到资源单元RE；
    所述SPRS资源由以下至少一个参数描述：SPRS资源ID、序列ID、Comb-N取值、资源单元RE偏移、SPRS资源的初始时隙和符号、每个SPRS资源的符号个数、与同步块SSB的准共站址信息；
    所述SPRS资源的符号个数是协议预定义的或者网络侧配置的；
    所述SPRS资源Comb-N取值是协议预定义的或者网络侧配置的。
  18. 根据权利要求15所述的方法，其特征在于，所述SPRS时域结构支持以下两种SPRS时域结构：
    单一时隙结构：在每一时隙中按照从前往后的顺序依次放置AGC、SPRS和GP；
    时隙绑定结构：在连续多个时隙中按照从前往后的顺序依次放置自动增益控制AGC、SPRS和保护间隔GP。
  19. 根据权利要求18所述的方法，其特征在于，所述时隙绑定结构，用于广播模式下1个终端连续发送SPRS。
  20. 根据权利要求18所述的方法，其特征在于，所述SPRS时域结构中，时域上SPRS占用的OFDM符号个数和位置是协议预定义的或者网络侧配置的。
  21. 根据权利要求15所述的方法，其特征在于，所述SPRS频域结构支持以下两种SPRS频域结构：
    第一种频域结构：连续多个资源单元RE占用全带宽，采用等间隔RE的梳状方式区分不同的SPRS资源；
    第二种频域结构：全带宽被划分为多个不同的连续子频带，不同SPRS资源占用不同的子频带。
  22. 根据权利要求21所述的方法，其特征在于，所述第一种频域结构中，频域上的梳状因子是协议预定义的或者网络侧配置的，不同的SPRS资源映射到不同的发送天线阵列上。
  23. 根据权利要求21所述的方法，其特征在于，所述SPRS频域结构支持固定的RE图样和跳频的RE图样。
  24. 根据权利要求15所述的方法，其特征在于，所述SPRS频域结构中的SPRS频域带宽是协议预定义的或者网络侧配置的，最大值为直通链路的最大系统带宽。
  25. 根据权利要求13所述的方法，其特征在于，通过协议预定义或信令 确定所述SPRS资源配置信息；其中，所述信令包括下列信令之一或组合：
    来自服务基站下发的广播信令、下行控制信息DCI信令、NR无线空口Uu协议定义的定位专用信令、近距离通信端口PC5协议的定位专用信令。
  26. 一种信号发送装置，其特征在于，该装置包括：
    存储器，用于存储程序指令；
    处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行权利要求1至12任一项所述的方法。
  27. 一种信号接收装置，其特征在于，该装置包括：
    存储器，用于存储程序指令；
    处理器，用于调用所述存储器中存储的程序指令，按照获得的程序执行权利要求13至25任一项所述的方法。
  28. 一种信号发送装置，其特征在于，包括：
    确定单元，用于确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息；
    发送单元，用于根据所述SPRS资源配置信息，通过直通链路向第二终端发送SPRS，用于所述第二终端基于该SPRS进行定位测量。
  29. 一种信号接收装置，其特征在于，包括：
    确定单元，用于确定第一终端在直通链路上的直通链路定位参考信号SPRS资源配置信息，所述SPRS资源配置信息是第二终端发送的；
    接收单元，用于根据所述SPRS资源配置信息，通过直通链路接收第二终端发送的SPRS。
  30. 一种计算机存储介质，其特征在于，所述计算机存储介质存储有计算机可执行指令，所述计算机可执行指令用于使所述计算机执行权利要求1至12任一项所述的方法，或执行权利要求13至25任一项所述的方法。
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